iOS：iOS10和Xcode8 一起建立Siri 功能

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前奏：

　　iOS 10 出來之後，我們開發人員也可以使用類似Siri的功能。它是使用Siri裡面的一個語音辨識架構Speech framework來處理siri的。現在， 讓我們來看看 一些 主要的代碼吧。 我們需要一個 UITextView 和 UIButton 就 能體現了。

 

實現：

• 第一步：定義屬性

@interface ViewController ()  <SFSpeechRecognizerDelegate>@property (strong, nonatomic) UIButton *siriBtu;//siri按鈕@property (strong, nonatomic) UITextView *siriTextView; //顯示語音轉化成的文本@property (strong, nonatomic) SFSpeechRecognitionTask *recognitionTask; //語音辨識任務@property (strong, nonatomic)SFSpeechRecognizer *speechRecognizer; //語音辨識器@property (strong, nonatomic) SFSpeechAudioBufferRecognitionRequest *recognitionRequest; //識別請求@property (strong, nonatomic)AVAudioEngine *audioEngine; //錄音引擎@end

• 第二步：進行語音辨識檢測

- (void)viewDidLoad {    [super viewDidLoad];

    //裝置識別語言為中文    NSLocale *cale = [[NSLocale alloc]initWithLocaleIdentifier:@"zh-CN"];    self.speechRecognizer = [[SFSpeechRecognizer alloc]initWithLocale:cale];    self.siriBtu.enabled = false;

　　//設定代理    _speechRecognizer.delegate = self;

　　//發送語音認證請求(首先要判斷裝置是否支援語音辨識功能)    [SFSpeechRecognizer requestAuthorization:^(SFSpeechRecognizerAuthorizationStatus status) {        bool isButtonEnabled = false;        switch (status) {            case SFSpeechRecognizerAuthorizationStatusAuthorized:                isButtonEnabled = true;                NSLog(@"可以語音辨識");                break;            case SFSpeechRecognizerAuthorizationStatusDenied:                isButtonEnabled = false;                NSLog(@"使用者被拒絕訪問語音辨識");                break;            case SFSpeechRecognizerAuthorizationStatusRestricted:                isButtonEnabled = false;                NSLog(@"不能在該裝置上進行語音辨識");                break;            case SFSpeechRecognizerAuthorizationStatusNotDetermined:                isButtonEnabled = false;                NSLog(@"沒有授權語音辨識");                break;            default:                break;        }        self.siriBtu.enabled = isButtonEnabled;    }];

　　//建立錄音引擎    self.audioEngine = [[AVAudioEngine alloc]init];}

• 第三步：按鈕的點擊事件

- (void)microphoneTap:(UIButton *)sender {    if ([self.audioEngine isRunning]) {        [self.audioEngine stop];        [self.recognitionRequest endAudio];        self.siriBtu.enabled = YES;        [self.siriBtu setTitle:@"開始錄製" forState:UIControlStateNormal];    }else{        [self startRecording];        [self.siriBtu setTitle:@"停止錄製" forState:UIControlStateNormal];    }}

• 第四步：開始錄製語音，並將語音轉為文本

-(void)startRecording{    if (self.recognitionTask) {        [self.recognitionTask cancel];        self.recognitionTask = nil;    }    AVAudioSession *audioSession = [AVAudioSession sharedInstance];    bool  audioBool = [audioSession setCategory:AVAudioSessionCategoryRecord error:nil];    bool  audioBool1= [audioSession setMode:AVAudioSessionModeMeasurement error:nil];    bool  audioBool2= [audioSession setActive:true withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];    if (audioBool || audioBool1||  audioBool2) {        NSLog(@"可以使用");    }else{        NSLog(@"這裡說明有的功能不支援");    }    self.recognitionRequest = [[SFSpeechAudioBufferRecognitionRequest alloc]init];    AVAudioInputNode *inputNode = self.audioEngine.inputNode;    SFSpeechAudioBufferRecognitionRequest *recognitionRequest;    self.recognitionRequest.shouldReportPartialResults = true;

　　//開始識別任務    self.recognitionTask = [self.speechRecognizer recognitionTaskWithRequest:self.recognitionRequest resultHandler:^(SFSpeechRecognitionResult * _Nullable result, NSError * _Nullable error) {        bool isFinal = false;        if (result) {            self.siriTextView.text = [[result bestTranscription] formattedString]; //語音轉文本            isFinal = [result isFinal];        }        if (error || isFinal) {            [self.audioEngine stop];            [inputNode removeTapOnBus:0];            self.recognitionRequest = nil;            self.recognitionTask = nil;            self.siriBtu.enabled = true;        }    }];    AVAudioFormat *recordingFormat = [inputNode outputFormatForBus:0];    [inputNode installTapOnBus:0 bufferSize:1024 format:recordingFormat block:^(AVAudioPCMBuffer * _Nonnull buffer, AVAudioTime * _Nonnull when) {        [self.recognitionRequest appendAudioPCMBuffer:buffer];    }];        [self.audioEngine prepare];    bool audioEngineBool = [self.audioEngine startAndReturnError:nil];    NSLog(@"%d",audioEngineBool);    self.siriTextView.text = @"我是小冰！Siri 冰，你說我聽";}

• 第五步：實現這個代理方法，就實現siri語音功能了

-(void)speechRecognizer:(SFSpeechRecognizer *)speechRecognizer availabilityDidChange:(BOOL)available{    if(available){        self.siriBtu.enabled = true;    }else{        self.siriBtu.enabled = false;    }}

為原博主點贊：http://www.jianshu.com/p/b29069529bc2

 

iOS：iOS10和Xcode8 一起建立Siri 功能